Robin Gibb's appearance on a British television show has fans concerned for the Bee Gees singer's health. The 61-year-old Gibb appeared extremely frail Monday on the "Alan Titchmarsh Show". Earlier in the day Gibb canceled a meeting with British Prime Minister David Cameron. The meeting was scheduled to promote Gibb's re-release of the Bee Gees hit, "I've Got To Get A Message To You". The release benefits the Royal British Legion fundraising group the Poppy Appeal. It's been no secret that Gibb's health has been fading in recent years:

Gibb has been suffering from intestinal problems for the past few years. His latest hospitalization came 10 days ago after he experienced severe abdominal pains, and he was forced to cancel shows in April due to a mystery illness. Last year, Gibb underwent surgery for a blocked intestine, the same ailment that killed his twin brother and bandmate Maurice in 2003. -

Gibb says he just wants to get the health issues behind him so he can get back to work.